Seagate Fibre Channel Interface User Manual
Page 253
Fibre Channel Interface Manual, Rev. D
239
12.13.11
Fibre Channel Interface Control page (19h)
The Fibre Channel Interface Control page controls options relevant to Fibre Channel protocol. It is intended for
the control of features unique to Fibre Channel protocol that are not suitable for control by login or other tech-
niques defined for Fibre Channel.
Both the current and saved values of Mode page 19h, byte 3, are changeable using the Mode Select com-
mand. When the saved value of Byte 3 is changed, a new value is stored in nonvolatile (flash) memory, not on
disc, and is reported during a Mode Sense command when either the current or saved value is requested.
The current value of Byte 3 may be modified using Mode Select command any number of times. The saved
value of Byte 3 may be modified using the Mode Select command up to 32 times. After 32 modifications, addi-
tional attempts to modify will result in a response of Illegal Request (05) with Error Code of 2600 (Invalid field in
parameter list) and the Sense Key pointing to byte 3 as the offending parameter. Additional updates of Byte 3
saved value may be accomplished by downloading new microcode that supports Fibre Channel Interface Con-
trol page 19h. After a download, the saved value of Byte 3 may be updated 31 more times or 32 times if the
value is 0 at the time of download.
The saved and current value of Byte 3 is preserved through the download.
Field definitions (listed alphabetically)
ALWLI (Allow Login Without Loop Initialization)
1
The target uses the Select_ID address available in the SCA connector and accepts logins without verifying the
address with loop initialization.
0
The target must verify the address through loop initialization before accepting a login.
DDIS (Disable Discovery)
1
The target does not require receipt of Address or Port Discovery ELS following loop initialization. The target
resumes processing of tasks upon completion of loop initialization.
0
The target must wait to receive an Address or Port Discovery ELS before it resumes processing tasks for that initia-
tor.
Table 156: Fibre Channel Interface Control page (19h)
Bit
Byte
7
6
5
4
3
2
1
0
0
1
0
0
1
1
0
0
1
PS
Reserved
Page Code (19h)
1
Page Length (06h)
2
0
0
0
0
0
0
0
0
Default
Reserved
3
DTFD
PLPB
DDIS
DLM
DSA
ALWLI
DTIPE
DTOLI
Default
4
0
0
0
0
0
0
0
0
Default
Reserved
5
0
0
0
0
0
0
0
0
Default
Reserved
6
0
0
0
0
0
0
0
0
Default
Reserved
7
0
0
0
0
0
0
0
0
Default
Reserved
Table
number